The IW371432 is IWC's stainless steel Portugieser Chronograph with a black dial, a 40.9 mm case, and the calibre 79350 inside. If you are shopping for a replica of it, the honest short answer is this: the good ones get the dial proportions and the two-register layout right, and the bad ones fail on case thickness and the running seconds position. Check those two things first and you filter out most of the market in a minute.
What the real reference actually is
The Portugieser Chronograph is the cleanest watch IWC makes. Two subdials, feuille hands, applied numerals, a slim bezel, and a lot of open dial. The 79350 movement is a heavily reworked Valjoux 7750, which is why the watch runs at 28,800 vph with about 44 hours of reserve and why the chronograph pushers feel crisp rather than soft. The case is 40.9 mm across and roughly 12.3 mm thick, the crystal is sapphire on both sides, and the strap is 20 mm at the lugs. Water resistance is a modest 3 bar, so treat it as a dress piece.
The three tiers you will run into
- Budget tier, roughly $80 to $150. Usually quartz or a basic automatic. Subdial spacing is off, the case runs thick, and the dial printing is flat under a loupe. Fine if you want the look for a season.
- Mid tier, roughly $200 to $400. Asian 7750 base with a modified subdial drive, sapphire front, mineral or sapphire back, decent leather. This is where most buyers land.
- Top tier, roughly $450 to $700. Closer case profile, proper applied indices, sunken subdial rings, engraved and decorated rotor, better strap hardware. Diminishing returns start here.
What I check in order
- Running seconds at 6, not 9. A stock 7750 puts the running seconds at 9 o'clock. The real Portugieser puts it at 6 and the 30-minute counter at 12. If a listing photo shows the small seconds at 9, walk away, it is the wrong movement layout.
- Case thickness. Anything over about 13.5 mm sits proud on the wrist and gives it away on the profile. Ask for a side photo, not just the dial.
- Dial printing. Look at the word spacing under 12, the thinness of the subdial rings, and whether the numerals are actually applied with sharp edges rather than stamped and painted.
- Hands. Feuille hands should taper to a point and have a slight curve. Flat cut metal hands read wrong instantly.
- Caseback. The real watch has an exhibition back with clean engraving and a decorated rotor. Replicas often overdo the engraving depth or use the wrong font.
- Strap and buckle. Most of the perceived quality on a $300 watch comes from the strap. Cheap alligator print with hard edges ruins an otherwise decent piece.
Red flags worth rejecting
Blurry macro photos, listings that reuse IWC press images, sellers who cannot tell you which movement is inside, and any claim of a genuine in-house calibre at a replica price. Also watch for mismatched subdial finishes, a date window that should not be there, and a caseback screwed on with visible gaps. Ask for a video with the chronograph running and the seconds hand sweeping.
Living with one
A 7750-based replica needs a service eventually, and plenty of local watchmakers will not touch it. Budget for that or accept it as a disposable. It will not hold value, it will not pass a close inspection by an owner, and the water resistance claim is a guess. What it will do is wear well at 40.9 mm on an average wrist and give you the dial layout that makes the Portugieser attractive in the first place. Buy the dial, not the story.